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Erythrasma
See also in: Anogenital
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Erythrasma

See also in: Anogenital
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Contributors: Mat Davey MD, Lynn McKinley-Grant MD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Erythrasma is a common, chronic superficial bacterial infection of the skin caused by Corynebacterium minutissimum. It is characterized by distinct, superficial hyperpigmented or erythematous patches localized to intertriginous areas, especially of the axillae, genitocrural crease, and interdigital web space of the toes. Lesions are often asymptomatic, although pruritus may be present, especially when it affects the genitocrural region. A "disciform" variant (large disc-like lesions) usually occurs outside of intertriginous areas and is associated with type 2 diabetes mellitus. Erythrasma may be acute or chronic. It may be asymptomatic or pruritic.

Obesity, diabetes mellitus, immunosuppression, a history of atopy, and hyperhidrosis are risk factors. All age groups may be affected, but incidence increases with age. The highest incidence is seen in regions of high humidity, especially in the tropics.

Codes

ICD10CM:
L08.1 – Erythrasma

SNOMEDCT:
238418005 – Erythrasma

Look For

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

In the toe webs, consider:

Best Tests

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Management Pearls

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Therapy

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References

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Last Reviewed: 08/16/2019
Last Updated: 08/16/2019
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Erythrasma
See also in: Anogenital
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Erythrasma : Fine scaly plaque, Intertriginous, Hyperpigmented patches
Clinical image of Erythrasma
A broad thin brown plaque with fine scale in the axilla.
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